(PHP 5 >= 5.2.0, PHP 7, PHP 8)
XMLReader::setSchema — Validate document against XSD
$filename): boolUse W3C XSD schema to validate the document as it is processed. Activation is only possible before the first Read().
filenameThe filename of the XSD schema.
成功时返回 true， 或者在失败时返回 false。
Issues E_WARNING if libxml was built without schema
support, the schema contains errors or if
XMLReader::read() has already been called.
此函数仅在 PHP 与 libxml 20620 或以上版本编译时可用。